To disable ubwc for decoder output:

adb shell setprop vendor.qc2.log.buffers 0x1002

To disable ubwc for encoder input:

adb shell setprop vendor.qc2.log.buffers 0x1010

Note: Ensure to disable SELinux before capturing the dumps:

adb shell setenforce 0

Note: make sure to create folder qc2 before trying to take dump:

adb shell mkdir /data/vendor/media/qc2

adb root

adb shell setenforce 0

adb shell setprop vendor.gralloc.disable_ubwc 1

OR:

adb shell setprop vendor.gralloc.disable_ubwc "1"

check below to make sure it was set to 1:

adb shell getprop vendor.gralloc.disable_ubwc

UBWC is enabled by default from video encoder perspective.

Can update vendor/etc/system_properties.xml and set(or add) below value: -->Push it back to /vendor/etc/ and reboot DUT, and check if UBWC was disabled.